Laminated lumber and method of making the same



Jan. 23, 1934. E E. HEINEMAN LAMINATED LUMBER AND METHOD OF MAKING THE SAME Filed Feb. 1 1932 ihaaaow IN VENT OR Edgar .5. fi/mmfi A 7'. TOR/VEV LMQZM Edgar I Heinn, 7

- l, 1932. @erinl No. scenes (ill. til-ell i Ciel.

This invention relates to lsted plans or lumber end has as on object the provision oi ed lemincted units not subject to wereinn end suitehle for o, wide variety oi uses and noting greet resistance to surfece weer.

n more specific object of this invention resides the provision oi units of laminated pies which ere built up or e plurality of substnntielly not hoords disposed side by side'so that the edge groin oi'the individnol looerds forms the surince oi the units,

Another object oi this invention resides in the provision of nlenlnne oi the chsrecter described which comprises connected sections in ilet enorsement with motel plates interleaved therehetween, so es to increese its strength end else its resistsnce' to suriece vgeer.

lied to :iurther object or this invention is to utiiine the belts or other cementing elements which hold individual sections together, to secure the edincent nlenl". units eeeinst reletiv e shiit- With the shove end other objects in view which will eppeer es the description proceeds,

*' this invention resides in the novel construction,

conshinetion end crreneenient of ports suhstentinllv es hereineiter described and more nerticu inrlv defined by the appended cleims, it being understood that such cheneres in the precise emhotlinient oi the hereindisclosed invention may he es some within the scope of the clniins.

in the eecomnmvine ell-swine, severed coinnlete enemies of the physical emhent of this invention ere illustreted constructed accordto the hest modes so for devised for the procticsi snnlicntion oi the principles thereoi, and in which:

Figure l. nlsnizine constructed in sccordsnce with this invention; V

Figure 2 is e. detsil nersnective vievv illustretine slightly modified msnner oi tore the plank-- oi this invention;

Figure 3 is e detsil perspective view illustretthe menner in which motel pistes ere inter lenveol between the edjncent sections;

Figure l is o cross section view tnlren through nlnnl: t iisvine motel pistes interposed between its edlecent hosrd sections with the tie bolt pointed to entree-e the nest odiecent unit end iliustretins its condition prior to completion; end

fis ure 5 is s top plan view of s, nlurelitv of units illustretine the mnnner oi using the tie incite to secure the units eeeinst reletive shift m3 end/or fillers prior to being assembled.

is c perspective View oi e unit oi METHOD 0F S unit.

The individusl sections oriiet boards d are stocked side by side and are secured together by W through-bolts 7 as illustrated in Figure l, by nulls 8 es depicted in Figure 2, or in any other suitehle manner; and if desired the feces of the individual hoards new be coated with glue, or other hinders When til bolts are used to tie the sections together, the hoods end nuts are preferably countersimlr so that the nienlr units may he placed edge to edge.

During the assembly or the individuel hoards it is not necessary that they he of exactly the it some width for softer the plank unit is completely esseruhled, it is passed through suitable mschinery to give both sides a smooth even suriece, or one or tooth surfaces may be given any desired surface configuretion for special purposes.

Where the nlsnlring is to he used for interior floors, for which it is particularly well adopted, it is obvious thet it very novel eppeerence may he ohteined by assembling hosrds oi diiierent wood, or oi different colors or shedes.

In instances where extreme strength and en centioneily tough wearing surteces ere desired, as where the planking is to he used for rslilrosd crossings and similar instellstions suloiectedto excessive wear, the wood hoerds or individual sections may be interleuvedwith metal pistes 9, es illustrated in Figure 3,

in this embodiment of the invention the beer ere preiereioly of greater width than the motel pistes during assembly, as illustrated in Figure to s, so that the plenir may he guessed through c nlener end the projecting edges of the boards dressed down close to the side edges of the motel plates, and ii a smooth suriece is desired, the plenh army he further finished by pressing it' through on ebreding machine cepeble of noting upon motel as well as wood,

While the individual boards or sections have been described as list they may be formed with s tongue and groove interlocking connection it as illustrated in Figure 2, to incrense the rigidity of the completed unit.

Where two or more'plsnlc units are to be employed side by side, the tie bolts '7 may-have their ends pointed end protruding from the adjacent till il -ll side surface of the unit as at 1 1, in Figures 4 and 5. The protruding pointed ends of the bolts thus bite into the next adjacent unit and serve to hold the units against relative shifting.

From the foregoing description taken in connection with the accompanying drawin it will be readily apparent to those skilled in the art to which an invention of this character appertains, that the laminated planking of this invention provides a convenient outlet for lumber which otherwise is very often considered waste and that comparatively wide units may be built up in this manner without danger of warping.

It is also apparent that the finishing of the faces of the completed planking after assembly results in a very desirable smooth surface and greatly reduces the cost of laying floors and similar surfaces where the hard wearing qualities of the edge grain of lumber is desired, as the planking may be manufactured and sold in finished units at a lower cost to the user than that of buying the individual parts and assembling them on the job. v i

What I claim as my invention is:

1; The hereindescribed method of forming a plank which consists in stacking a plurality of 2. A laminated plank unit comprising, a plurality of substantially fiat boards disposed side by side with their faces engaging and their edges forming the sides of the plank unit, means for securing the plurality of individual boards together, and means formed directly on the s curing means and protruding from one edge of the plank unit for engagement with an adjacent object to hold the plank unit against relative shifting with respect to said adjacent object.

3. A laminated plank unit comprising, a plu- .rality of substantially flat boards disposed side by side with their faces engaging and their edges forming the sides of the plank unit, tie bolts for securing the individual boards together, and points formed on the ends of the tie bolts and protruding from the edge of the plank unit to bite into an adjacent unit and thus secure the units against relative shifting.

4. A laminatedplank unit comprising a plurality of individualboards disposed side by side with their faces in engagement and their edges providing the opposite sides of the plank unit, bolts extending through the assembled individual boards to secure the same together, said through bolts having their heads countersunk within the plank unit, nuts threaded on the bolts and countersunk in recesses to lie beneath the plane of the adjacent edge of the plank, unit, and sharp points formed on the bolts outwardly of the nut and projecting beyond the plane of said edge of the plank unit for engagement with an adjacent object to securethe plank unit against relative sh fting with respect to said object.

1 10 EDGAR E. HEINEMAN.

' his 

